Philips LV-ROM LaserVision VP415 User manual

L\fRDM
VP415
Laser Vision
ROM disc drive
PHILIPS

tU N IF N TS
Section I INTRODUCTION
INSTALLATION
FEATURESOFTHEVP4!5
CONTROLS, INDICATORSANDCONNECTIONS
Section 2 PLAYING
ADISC
Section1 SPECIALPLAYFUNCTIONS
Section~ INTERACTIVEPLAY
OPERATION
Se ction 'i F-CODEPROGRAMMING
Section h F-CODECOMMANDS
Section 7 SCSI OPERATION
Section X MAINTENANCE
TECHNICALDATA
3122 1"610 101 Pri med in lklgium

/
11 12 13 14 15
16 17 18
Fig. I: VP415 c:ontrob and connections.

Vl'~li (front)
fJECTbulto•
STANDBY hulin11or
ON/STANDBY bullon
EJ[CTiD~Cllor
PAUSE Mintor
REPLAY india!Cor
Rt:PEATindinlor
AUDIO I indicator
AUDIO Z indicator
CAVin4icator
C LViadintor
RF.MOTE CONTROL indicator
VP~l5 (rear)
I ON/OFFiwitch
Z MAINSkadsockel
J REPLAY on/offswilrh
4 RC IR/EURO ~witch
.5 WIRED RC socket
6 RSll2C sodttl
7 84UDRA TE dipswitches
M AUDIOIN(l&l) sockt ts
9 AUOIOOUT(l&l) soc kels
II AN EUROCONNECTOR
II H·SHIFTrontrollrorGenlotkl
12 CVBSOlfTsocket
U- SYNC OUT sod,ct
1, cvas IN !W)("kets
15 SYNC IN wcktb
16 RGB!ITL)INIKICkel
17 SCSl ad*t ss d lp5 witch es
18 SCSl$0l'ktl

SECTION I
F'ig. J: VP415 con1roU and ~n«1ioru
INTRODUCTION .
TheLaserVi~ion Sy s 1em
TypnoflAsuVisiondisc.
lnlcnictiveu1>e
•·1-:ATURt:S
ot'THE VP41S
RGB output/ PAL·RGB decoder
Sync-pulse generator
Genlock
CVBSoutput /RGB·PAL encoder .
Electronic timebase
corrector.
VMlcomi11.ing .
Instant jump
Fastral\domactc!iS
Wired remote control
INS"r
,\(.1.,\ nON
Si1ing1heplayer .
Connectingthe player to the mains
Connecting the player to a monitor
Fi g. 2: Co1"1«ticm andadaptorcables
C-ction to peripheral audioequipment
Rcrno1:econtrolhandse1
Fig. .1: lnstrtingbaneries in rnnottcontrol hanllM1
C
ONTKOIS, INDICATORS AND CO.'lrlNE(.TIONS
Summary of controls
Summary of front-panel indieaton
Summa ry or eonnec1ions

INTRODUCTION
The VP41S ~rVision player (ROM disc driv e) is primarilydesigned
for use
in inleraclivc oomputer-c:ontrolled systems rtu,1 exploit the
capabiliticsofl.&strVisio na s a vena1ile,high-quati1yst0111efrc1rieval
medium. Communication between the YP4tS
and a contro llin&
COl'!IP'JICr is via s1andard RS2J2-C or SCSI interfaoes, bolh of which
are fitted to the player. The player can be used with ordinary
Lz.erVision discs containing audiovisual inrormacion.
or LY-ROM
discs. which contain data a.swell as audiovisual inf or mation. This dala
la lr.nlheplaceoftheaudiochannelonsomeor allsec;tiom;ofthcdisc.
1l>e VP415 can of coum! be used for direct playbxt of LascrVision
CAY (Active play) or CLV (Long play) discs. In 1h is respect it has
e111ensi vc program control. wilh search and memory facilities.
conveniently operated from the remotecontrol h.andsc1.
THE I.ASl-:RVISION SYSl'EM
J...asnVisionis1he on\yaudiovisualplaybacksys1emusingoptical(la se r
be a m) reai;lout. The laser beam, concentrated 10 an almost
inconceivably fine point (
60 1imes finer Chan a gramophone stylus ).
reacts wry densely- pa cked inf or malion under lhe u amp ar cnt su rf ace
of the La scrVision di sc .
The: ptdurc reproduced is of high quality wich ?-cha11ncl mono or
slereowund. Th e re is nowear to the disc or 'pick-up·. and the discs are
uuesnely resistant to scratches. dust and fingerprinls.
Typaef 1.aaerViliondbc
Thtte 1ypes of disc arc available and the playerwill
operat e withanyofthese:
J. N MaillCA. V(Active play)di~spin al aoonscanl speed of 1500
r.p.m. They have a muimum capaci1y of 54 000 pi c tur es per side
(36 minu1es played at 25 pictures per $CC011d) and of fer special
LaserVision eU
ec lS such as still. slow-~ tO n. reverse pla y. f as t
forward. fMt reverse a
nd goco pi cture or chap1er number .
1. CLV(Longpl ay ) discss pi n at a s pe ed which g.ra d1W1 1ly decreases as
11te disc plays. The y offer conli nu ous forw ar d pby only. but with
lime and ch a pter search. a nd !headvantage of an i ncre ased playing
lime
oflhourpcrsidc.
J. LY-ROM. ThisisatypeofCAV(Acti ve play )disc.withdata
replacing some or all parts of the audio tra,ck. lbeir maximum
u
pa city is 324 Mbytes of user data and54000pim1res.
INU:RACllVI-: USE
The VP41S allows all the facilities of the LaserViskin sys tem to be
coratr~led by a computer. In this way. the computer can control the
pK1u r e, sound a nd LV-ROM dat a. Play is concrollcd by picrnre
numben. c hapt er numbe r$ . au tost ops or a compu1er program. Th e
program
ca n be activaced by the V f'41 Sremotecontrol h,md s.e t. or via
lbe computer ke y bo ard. or o th er oomputer pe ri pher al .
C
ommuni cation with the VP 415 is achieved u,i ng eilbc, 11 special code
knownu F
-wde . or LV- DO S co mmands (v ia 1he SCSI inte rf a ce ).
1ltc F-a>de in s tru ct ion set enables co mmands 10 be se n1 (as ASC II
characters) to the player; some of thesecommandsc.aus.ing responses
10
be relumed to the computer. Using F-codeoomm 11 ncb. a VP415 can
participate
in an interactive programwith any computer system that is
l
oad ed wi1h the necessary program.
LV-OOS commands allow the VP41S 10 be u sed as an LV-ROM
memory device
in a compu1er system. Both data retrieval from disc
andpt ayer co ntrol are possible.
FEAl'URES OF THE VP415
RGB o...,.1/PAl.,&GII dttoder
The VP41S allows the best possible pi cture qu ality10 be obt a ined from
a LaserVisk>ndisc.
by emptoyinaa built-in PA L- RGB decoder. Wi thin
the LaserVision format. videoinform 91 ion iss1ored on the disc- in P AL
encodedform. Tlmcan cause problems when the dik:is played in ·s 1il\
frame· or 'slow motton·. or any other non-standard playing mode.
because lhe
PAL 8·riekl sequence becomes destroyed. In order 10
correct lhis se qu e nc.e such that a monitor can understa nd ii and
reproducecorrect cofour. many players incorporate a
'PAL M od ifier'.
This piece
of circui lry corrects the PAL sequence. but in do ing so.
reduces lhe video ba ndwidth. and introduces other unwantedeffects.
e.g.echoes.
The VP41S txkks this problem by employing a fast-locking PAL-
RGB deooder. Having 1his device built-in. allows itscharacteristics 10
befully optimised 10 g;ve 1hc highest possible picture qu ality from the
disc. even in non·Slandard playing modes.
Th e resulc is an RCB output giving the full S MHz video bandw:idlh in
au playing modes. 1be benefit is particularly va lu able when viewin&
vi de om ate ri alsuch M mapswith fi nct eKt.
RGB output abo h:nds it-1\tll to simpler miKing with computergraphic
output (al$o
RGB). in ut ernalequipment if required.
Sy11Cpalse1nent«
The VP41Scontainsa n internal sync pulse generator (SPG) whichmay
either free-nm. or in 1he presence of a suitable reference signal. lock
itself
to the u 1 emal rererence (G enlock).
The SPG provides fre~ly-generated line and field sync pulses at the
player·svideo
ou t put at all times. Followin1 the decoclin&processrrom
PAL to RGB (sec above), fresh Jync pulses are in se rted into11te RGB
si1na l. wh ich is av ailable 11 1he Eur oco nn ec tor socket. Ther ef ore a
~table
out put r rom 1he player is guaranc ee d at all cime s
Ge lllock
Genl oc: k al lo ~ 1hefield and line sync pulsesfrom the player oulpul to
be synchronised wilh an external reference signal. It en s ure s correct
overlay
of videosignals andcan also prev e nt picture jump or roll. The
reference signal, comp risi ng line and field syncs (negalive•going)
should be
appl ie d to(i) ei1herofthe two SYNC IN soc:ketsor (ii) pin4
of the RGB ( TTL) IN socke t. A horizontalshift of the overlaypicture
isachieved byadjustingthe H-SHIFTcontrolsituated
at th e re ar of 1h e
player.
Nou: Th e playermay take up to 2seconds inilially to effectively lock
toarefcren<:esipl
Th e V P41 5 eon1ains an RG B -P AL en cod er . Th is 1akes 1he RGB
out pul fro m lhe pl ayer (pri or to t he vid eo miKingstage) a nd encodes it
into a CVBS si1n
al using fresh sync pulses f ro m the int erna lS PG . 1be
signal available at the CVBS output is thus totally stable. It does
however have a r ed uc ed bandwidth in all pl ay ing m ode s ( appro a 3
MHz).
A
C.C.D. (charge coupleddevice) timebase correclor is employed 10
provide corre ct ion of timing errors always present in the sign.al read
from the video disc. This replaces the more traditional tan&ential
mirror
(me chanical method) allowing for a smaller. lighter op tkal
s ysc em. This redlKtion in mass allows th e opt ic al readou1 unit co ua cl;
1he disc fas1er and thus reduces pi ctureaccess lime.

The VP4\S has a built-in video miler which is able 10 mil either the
RGB signal derived from tbe video disc (via the PAL-RGB decoder)
or an RGB signal derived from an
el tem al video signal (conncclCd lo
one of
1hc CVBS IN soc:kels), with an eltcmal Tn ROB signal from
the RGB (TTL)
IN soc:kCI
This facility allows the TIL RGB graphics ou1pu1 of an ex1cmal
compu1er to be milcd
wi1h 1hc off-disc video (or exiemal video) in a
number of ways. The miled
Vkico is availab le at the Euroconncctor
soc:ke1:
Mo*I: Playe rRGBon ly
Model : Compu1erRGBonly
Model : Keymode
Playcroutput: 100'J'.intensity
Computeroutp.it:
100 % intensity
Mode<I: Mixcdmode(nansparentvaphics)
Playt:roulput: 02% intensily
Computeroulp.11:
38 % inlensily
Mode5: Enhanccdvideo
•' highlighting'
(presence ofgraphics produces
IOO%
intensityvideoatlhatpoinl;
elsewhere video
is reduced)
Pl aye routput( i npresenceofgr aphics):
IOO¾intensity
Playeroutput(No graphics):
57%intensity
When mixing
in 1his manner. the VP4\S 'genlocks" to the oomposilC
sy ncsignalfromtheextemalcompu1er.
·--
The VP415 ;;i.lso incorporates an 'Instant Jump' feature. Essen1ially this
means that the radial mirrorwhich points the laser beam at the required
disc uack can be made
10 ·twitch' and therefore jump a predetermined
number of !racks (max.
SO) in either direction during the vertical
internl (field nyback 1im e). Small jumps are invisible, as they can be
performed within the videoblanking.Thisgives the effect ofan instant
search to the required picture · almost as if
it were immediate ly
adjacentlothecurrentpicture.
This feature is valuable in for example map-walking. wh ere each
picture contains a map
of an area and each successive picture shOW5
adjacent areas. The user can 'scan· across map boundaries with no
'
bl ack picture' between maps while the pl aye rsearchesforthenext
picture.
It
is also possible to in1er\eave programmes on the disc such that by
playingthe disc and missins
ou1 (jumpingover) every altem ate picture,
one particular storyline
is followed, and then by offseuing this proces.s
by one picture, anotherstoryline is immedia1elyaccessed and followed.
II musl be realised 1ha1 foUowiog a jump, the opttelll slide requires a
finite time
10 ·catch up· artd centralise lhe radial miC"Tor. Thus a limit is
imposed on how many jumps may be made in a given lime. The limit
OCCUB when the effective playing speed of the disc exceeds 20 times
normal speed, i.e.
ii is possible to jump 20 tracks, display for a period
of I picture, then jumpanother20 tracksetc. continuously, without the
optical slide falling behind.
Details of the types of jump possible, and their associated commands
are given
in lhe F·Code command list (sec Section 6).
TbeVP41Sfea1uresaveryfastrandomaettsstime;1hisisthe1ime
needed for the optical readout unit 10 move from one point on the disc
10 another, which may beanywhere on lhe disc. Figures are typically
1s for a CAV
di sc and Ss fora CLV disc.
Wiredreaoteeoatrol
In some applications it may be required lo hid e lhe VP41S. In such
cases, the infra-red beam of the remo1e control handsc1
may no1 be
able to operate. For reliable working under such conditions, the wired
connection should be used between the remote control handset and the
WIRED R Csock ct at the rear of the player.

INSTALLATION
SITING THE PLA \'ER
Stand the player on a firm level surface, eiasuring 1h11 die venlilalion
slotso• lbe lop and sides oflhe playerare nol obsanided, Do not Mand
a monilor directly on top of the player if thisobstructs these ventilation
slols; in thi~ case. a properly designed rack should be used lo support
the monitor. Never stand the player directly on any electronic
equipment that gives off a suhs1an1ial amount of heal. or near 10 any
heat source. Avoid any position where the player is subjected to direct
sunlight for long periods.
CONNl-:CTING THE PI.A \'F:RTOTHE MAINS
The VP415 is designed to operate from a SU/61) Hz a.c. main~ supply
with any voltage between 220 and 240 V. If your local mains supply
docs not fall into this category. contact your nearesl Philips
Organisation
If necessary.
fit a mains plug to the mains lead as described below.
l,,,parr,..1no1t/f)t'(!.K. ...,...
WARNIN6i: THIS APPARATUS
MUST BE EARTHED
The wires in the mains lead arccoloun;d in accordance wnh 1he following code
Grccn·and·ycllnw:Earth
llluc:Ncutral
Brown:l.ivc
These, colours may nOI corrc,pond "'ilh the colour marking, idcmifying 1hc
terminals in your plug. '" proceed ;1, follow,: Connccl lhe Grcen·and·~cllnw
wore 10 lhe terminal marked Eor -½ .orcolnurcd Green orGrccn-and·)·clluw:
Connecl
the Brown wire 10 1he terminal marked L. orcoloured Red: Connect
the Blue wire w the terminal mukcd N.or e<.>lourcd lllack
lnscrtthemain,plugin1nawaLl,ockot.lf1hcpla)·cri,n<>1tohcuscdforalong
period of lime. rcmu~e the mains plug frol'II the ,.,.11 socket
CONNt:CTING THE PI.AYER TO A MONITOR
The VP415 has outputs suitable for both RGB monitors and CVBS
monitors. Vanous connection possibilities arc described below. Also
refer
to Fig. 2 • ·Connection and adaptor cables·.
Nott:Some moniton. have a ·time•constant'~witch for u,c with a VCR;
this should be set
to the ·normal' (i.e. non-VCR) position for
LaserVisionusc.
This
is a direct connection. ensuring the highest quality picture and. if
the monitor
is equipped for it. stereo sound.
It is also possible 10 use a TV receiver ifit is fitted with a Euroconneclor
socket.
Connect the cable supplied between
the AIV EUROCONNECTOR
wcket on the rear of the player and the corrc~ponding sockel on the
monitor.
This connection carries both ROB and CVBS signals. Optimum
picture quality is ohtained if the ROB signals arc used. Therefore if the
monitoraccepts both RGB and CVBSsignals. ensure that it is switched
to ROB input.
If"° Eumr:ann«forsodcdisavallablr:
I. &roconn«tor-to-DIN
A. V (audio/vhko) -CVBSonly
If the monitor is fitted with a 6-pole DIN AV (Audio-Video)socket.
lhe Euroconncc!Or·to-DIN
AV adaptor cable SBC 1012 (4822 321
20485, length 1.5 m) mus! be used. Connect the Euroconncctor plug
to the AN EUROCONNECTOR socket of the player and the DIN
AV plug to the monitor.
2. lrthc monitor is fitted with a coaxial BNC-typc video input socket.
there arc two possihilitics·
a. Euroa,nn«tor-to-BNC -CVBSonly
Using Euroconncctor-to-BNC adaptor cahte SBC JUI) (-1822 321
204K4. length 1.5 m). connCl't the Euroconnector plug to the A/V
EUROCONNECTOR sockel or the player and one coaxial BNC
plug lo lhe video inpu1 of 1he monitor. Connect the 5-polc DIN
Audio plug of this adaptor cahlc to the Audio injiut socket of your
monitor or to an audio amplifier
b. BNC-to-BNC (waxlal). CVBSonly
Using BNC-to·BNC connection cahlc SBC I0\5 (.tll22 32fl J lOO),
length 1.5 m). connl.>ct ti,ctwecn the CVBS OUT socket of the player
and the video input of the monilor. The Audio signal must he taken
from the AUDIO OUT socket~ of the player using a connection
cable SBC044 (41122 321 20344. lcngth IO m)
CONNE<.TION TO PERIPHERAL AUDIO EQUIPMENT
The AUDIO OUT socke1s on the rear of the player can he connected
through connection cable SBC 043 (4822 321 203(18, length 2.5 m) or
SBC (144 (4822 321 20344. length HJ m) to a linear input of the
peripheral equipment. Either or both sound channels may he swi1chcd
on
or off by means of the AUDIO I and AUDIO 2 buttons on the
remote control handset.
If a disc con1ains stereosound, this will be reproducedstereophonically
when
bo1h channels arc in operation.
Noll!: If either audio channel is switchetl off. then the remaining audio
signal is rooted to both output channels. This avoids ·one-sided' sound
from a dual-language disc
REMOTE CONTROL HANDSET (Fi,:s. l and3)
Normally. the VP415 operates by remote control from the infra-red
remote control handset ~upplicd. The control hullon~ on lhis hand~cl
have been grouped into logically-related sections.
The remote control handset controls all play functions, audio and
memorycontrols and also accesses specified program pans.
The handset can he used in conjunction with the infra-red detector on
the VP415 itself. or. when a Euroconnccmr connection is used. with
the infra-red detector on the monitor (dependent on ac1oal monitor
model). In the latter case. the RC IR/EURO switch on the rear of the
VP415(!>CcFig. l)mustbe~etloEURO.
When using the handset. point it directly at the infra-red detcclor on
the front of the player (or monitor). If 1his is not pos.~ihlc. or not
convenient,
the remote control cable supplied can be connected
between the handset and the player (sec ·Wired remotecon1ror earlier
in this section). The handset require~ 4X 1.5 volt haucncs. type ROJ or
UM4. located in its base (Sec Fig. 3).
Fig. J: Inserting baneriesin remote conlrol handsel.

SBC1010
SBC1011
SBC1012
482232120486
482232120487
~~
SBC1013 1.som 482232120484
S
BC1014
SBC043
SBC044
48223212030a
482232120344
fla. l : c-mion andadaplor C11 bl es.
~: ~- - -, --------- -·
s. 41 1---ol
,. •-1--------...--
•. ·- --------1- -
::::::
17 ~
,,. ~·-· .... ! _ _____ -.....
~----- - ·L9
@ --a-------<>--®
@ @

CONTROLS, INDICATORS AND
CONNECTIONS (Fig. I)
SUMMARY 0t·coNTROI.S
rw.,o1,..,...,
• E/ECTbuuon
For openinJ the disc-tray and ejectinga diK" if one I$ loaded.
• ONISTilNDBYbutton
For ,witching between 'standby' and 'on' modes. This DUuon also
effects aCP Ure~t.
•nretplayer (• ... ben refer lo fie, I)
• ON/OFFswitch (I)
Primary mains powerswitch
• REPL.4.Yon.loffswitch (3)
Swild\es the replay function on or off. See "Repb.y' in Section) .
• RCIRIEUROswitch (4)
To switch between remote control commands bcln1 iueived directly
by1he VP41S (JR) or viathe monitor(EURO) .
• BAUDRATEdip5witches(7)
For5decting the baud rate for RS232-C communica1ion. See Section S
-'F-oodeprogramming'.
• ff-SHIFT control (I I)
To shift the horizontal position of the pic::ture when using an utemal
sync iignal (connected to either of the SYNC IN sockets). Sec
·Gentock'
inSectionl.
• SCSI addre55dipswitches(I7)
To s.c1 the SCSI bus address of the player. See Section 7 - ·SCSI
ope,a1ion°.
SUMMA KY 01: t· RONT • PA Nt '. l. ll'liDICAT ORS
TIM: Jot lowingindicatorsgive status informllion :aboul he VP41S:
STANDBY (red) Lights in standby mode and fla~during
start-up.
EJECT (grccn)Aashcsduringcjccl.
PAUSE (grccn)Lightsduringpause.
REPLAY (green)Lightswhen replayfunccion is active.
REPEAT (green)Light$when repeat fulk:ttOn is active
AUDIO I (green)Lights when audio channel I in nabled.
AU D102 (1n:en) Li&hl s when 1udio channe l 2 is en ab le d.
CAV (green)Lighls when playingCAV disa .
CL V (green)Lig ht s when playingCLV di scs.
REMOTE (green) Rashes toconfinn that player is receiving
CONTROL 1rcmotecontrolcommand
SUMMARY OF CONNECTIONS (numben rderto Fia. I)
• MAINS lead soctct (2)
Forconnecti-Onofthemainslcad.
• W/REDRCsocket(S)
For wiredconnection of thr remote control handset. using the r emo te
control cable supplied. This permits the remote conlrol to be used
when the VP415is hidden from view. (Sec "Wired rrmole rontror in
Section 1.)
• RS232C socket (6)
Providesa serial u,nnection for an external computer.
•
A.UD/O/N(land2)socke1s(8)
Used for connection of an external stereo or 2-channel sound source.
AUDIOL • A UD IO I;
AUDIO R = AUDIO 2.
• AUD/001.D(I and2)sockets(9)
Used forconn.cction of an external stereo or 2-ehannel sound iOuree.
AUDIO L • AUDIO I;
AUDIO R"' AUD102.
•AIVE~(IO)
Provides connection for variety of inputs and ou1puu for a monilOf.
Sec Section8 • ·Technicalda1a' for full details.
•
CVBS0UTwtkct(l2)
Provides a video s,ignal output suitable for a monitor. FOi'" funhcr
information, rdc, 10 ·eves output/ RGe·PALencoder' inSce1ion I .
• St7VCOUTsoctet(13)
Provides a synchronising signal for the host compu1cr or a second
VP41Scannectedinpar11llcl
• CV8$/Nsockets(14)
These two sockets a rc internally conne cte d: c ilher of them rnay be
used. They acc tpc an external vidto input sianal .e.g . fr om a se cond
VP41S. The signal may be looped th ro ugh to o ther cq...ipment usin1
the second CVBS IN socket. If no such l oop is used, the Kcond sockel
must be property terminated with a 75 ohm plug. To lock 1hc ev es
signal to an e:r.temlll R GB signal (for mi:r.ing purposes ), it must be
looped through to one of th e SYNC IN sockets.
• St7VC/Nsoctets(IS)
These two socke1s ar c internally connected; either of them may be
used. They acccp1 an cxlemal videosynchronisingsignal which may be
looped through to other e quipment using the second SYNC INsocket.
If no such loop r!wed. the second socket must be properly termin a ted
witha7:5ohmplu,.
Note: The rcfcuncc sisneol must conform to broadc a st st a nd ards in
respect of putsc- shape and 1iming(1s11ndard CVBS signalis sui1able).
• RG8(1TL)INsocket(J6)
DIN RGB inpul sockcl for vi d eo and sync input from an uternal
co mp ute r. Rde r to See1ion 8- · Te chnical data" for further delaib.
• SCS/ soc ket(l8 )
Provid es a connection to an ext ernal comp ut er ac co rding 10 SCSI
standard s. Rder10Scction8 -0Tcchnic ald1t a' forfurthcrdetails .

SEC"flON 2
l'LA YING A DISC .
Switching on
Inserting a disc
Au1oma1ic play
To slop play and remove 1he disc .
Page
II
II
II
II
II
10

PLAYING A DISC (Rercrlol'ii . I)
SWIT<.:HINGON
Switch
on 1he player U$in1 the mains ONIOFF swlcch loelltd 11 the
rea r. Check 1h11 the REPLAY !w i1ch is in 1he OFF posilion. The
STANDBY indicalorwill li&ht.
Prus !he ON/ST A.NOBY button; the ST AND BY i!Ml ica tor will then
flash. A waming 'beep' is given to indicate thlll nodis(: has yet been
loaded.
Nou: The VP41S contains a Ian to maintain correct operating
lemperature. If a certain temperature iseJ1ceeded.1he ~dofthis fan
win automatkally increase; thi5. is quite normal and ao1 a fault
indicati on.
Press the EJECT button; the disc-tray will partly open. Pull ou1 1he
disc-1,ay aU the way. Remove the disc from ils pa d:aJins and place it
on l he disc-u·•y wi1h the desired label uppcnnos1.
At:TOMATIC PI.AY
Genlly push the disc-tray forward; it will be drawn inside
amoma1ically. Th e discwill build up 10 speed (ISOOr.p.m.)in approx.
10 seoonds. During the start-up period, the STANDBY indicator
flashes.
As soon as the correci speed has been re ached. 1he STANDBY
indit&IOf goes out and either the CAV or Cl V indicator lights,
according 10 the type of disc loaded. Play then commences. Also refer
lo Section3 - 'Special play functions'.
When the erMI of 1h e disc is reached, the player rc1ums rapidly 10 the
firs! track, &,ives a warning ·beep' , and e nt ers the pause mode. If no
funhercommandi,given wi1hin 2minu1c,, the pla ye rgoe110 standby,
If repeated playins: of the disc is req uired, lhe REPLAY switch should
be in lhe ON posilion. This will be confirm ed by lhe R EPLAY
indtc:ator. Jn this case, the co nt ro ls on the front of lhe player are
di sabled
rOSTOP PI.AY A~D REMOvt: TIU: DIS C
To terminat e play at any time:, press the: EJECT buuonon th e: front of
the player. When the: disc comes to a standstill, the: player ejects the
disc and goes to the standbyc:ondi1ion.
11

SECTION3
SPECIAL PLA \' FUNCTIONS .
St andby
Playlonward
Playrevcrse
SCill
SCq, rorward and reverse
Pklure number, chapternumber and tin1c aidedisplay
FIJ.f:l'i,ctuurwmMrdispkly.
Fig. 5: C~rnumba-display
Fi1. 6: Timecodedisplay
Playc1anddiscs1a1usdisplay.
Fig, 1: Playtranddi.rcstlllwdi.Jplay
Search
Po=
Slow.
Audio
Ooto pte1ure number
Goto chaprer number
Gotolime position
Programming
Fig. IJ: Pro1rr,mmUlg dispUly
Picturesegment programentry
Chapterprogramentry
Tll'Ksegmcnlprogramentry.
P1ayingaprogrammedsequence.
Start/repeat
Replay .
TXTbuuon
....
"
"
"
"
"
"
"
"
"
"
13
"
I)
"
"
14
14
14
14
14
14
14
"
"
"
"
"
"
16
12

SPECIAL PLAY FUNCTIONS
All the fone1ions deo;cribed in 1his section may be pcrfo mw:d u5in s the
rcmo6e control handset. Some
runctions h;i.w: iliffcrent cffc c:1 s
dependingupon the presenl mode (c., . whc1her1be pbyer is currently
playinga disc or not). CAV {Active play) and CLV (Long play) di!o('S
also havt tt r1ain oommands which can only~ used 1With 1h a1type or
dtSC ..
U lhe remote control handset does not fune1ion. check that the RC
IRJEURO switch on the rear of the player is in 1he IR position.
ST,\'.'IOR\' (1dso 0:'lr/lSTA~DB\' control on pl•f"'J
Pressing this bunon during any play operation will c :.Hsc the current
at1ion
to cease. The player goes to the standby mode . Any on-screen
display
g~ out and the STANDBY indicator on tbe rrontof the player
lighls.
If programmingwas in progress. it is te rminated. Pressing any
pl
ay ing mode bunon while the player is instandby,c.i.uscs the player 10
commence 1ha1 action
N41«: lh hc repl ay runction is in ope mion, Che S TA NDBY hun on i~
disabled
Pl.AYt'<}RWARD
Prusing the > section of the PLAY butlon ~ans forwa~d play (al
oormalspccd) .
PI.A y Rt ; vt:Rst; (CA\' •ml,·)
Pressing lhe ~ s.ection of the PLAY button sla ns reverse play (at
normal1.p:ed).
STILl.1CAVn a 1,·1
Wh en either ilt ttion of the STILL button is p,c»cd. tht picture
b«omts stationary. A still picture is useful for lhe dose cxamina1ion
of a situation (for u ample, in spo rt), or the ~1udy of details (in an
ins1 ,uc 1i ona l programme). It can also s erve as a stion inierludt during
playback.
STf.P t· ORWARD AND Kl, ; H• :RSE
If lhc >or~ !tCc lion of the ST ILL buuon is pr essed. the following or
prca:din gpic ture appc ~rs respectively.
PIC£ C RE NUMBl,:R. CHAPTER .,UMKl- :K ASUTl.\11-: C'.OIH'
UISPI.AY
E~ individual picture on a CA V disc h~s a number ,, ,;hid, is encoded
on 1he disc. Discs may also be divided inm chapters; t hes.e chap1er
numbe rs arc also encoded on the disc. To di sp l ay 1 be current picture
number on the moni1orscreen(Fig. 4), pre ss the PNR buuon. The play
mode is alsodisplayed. Pre~ the buu on again to r emove the Ui sp tay.
To display the chap1er number on the screen {F i@. 5>. pr ess the CNR
bunc m. Pn:ss ii again m remove the di sp lay
I S1lLL PNR
1642
r •. 4: Pkuren11111berdisplay,
IPLAY F1JD
CHR 2
flt. 5: CMpl:Hn111nbe:rdbplay.
In
Cl V discs. an elapsed time code is encoded on the disc. This time
rode may be in minu1es only or in minutes .a nd sccortds. depending on
1he
pan kular di sc. So me CLV discs are alsodividedin10 chaptcrJ, and
lh esc ehapler numbers enc od ed on 1h e disc.
"
To display the cun ent elapsed lime on the screen (Fig. 6). press 1hc
PNR button. Pr essit again 10 remove the display.
To display the ch;ap1er number on the screen (Fig. 5 ), preM 1h.c CNR
button. Prc$ si1apin1 oremove1heUisplay.
I PLAY F1JD TD'IE 11 : 23
fls.6:T-wdcdii:flay.
PLA n:R ,\:\'I) IHSCSTATllS DISPLAY
Pressing the DIS PLAY hutton will cause the playerand di~ ~1a1u~ to
be displayed onlhc screen. Discstatus(e.g. CAVICL V, side, sizc,ele .)
i~ shown on lhc right and player status (e.g. play mode) on lhe lefl.
Pressing!he
bu11on again switches the displayort.
lf,however,t he picturenumbcretc.wasbcingdisplaycdontbcscrcen .
the player enters
lhe programming mode. Sec ·Programmin g' bier in
thissec1ion.
VIDEO OH STEREO
AUDI01 OH
AUM02 OH
SLOIJ 1/3 CAV
FAST 3 SIDE 1
9600 BAUD 30 CH
Fi&, 7: Pllya .... _ 1tal111 dbplay.
Sl-:AH.01
If only a part of a disc is required. it can be quickly found u.<.ing lhc
SEARCH bunon. Pre. tS in g and holding the appropriawseccion of this
huunn mo ve~ 1ht O{lf ital r ea do ut unil in lhc de~ired d ir ection it
approxima1dy 201iml'Snormals peeU
During this se arch ittlion you will KC on the ~ rccn a very ra pid
~u cee S11 ion of pKlures from the programme.
When
the bult on is released. th e player reverts 10 the mode which it
w~sin
priorl osca rching.
It is often use(ul
lo have the picture number etc. di spl ay ed while
searching.
When searching a
CAV di5" containing ehapler numbers :.ind ltk:sc
numbers
:.irt: being displayed. the player aulomatically rcv crl s 10 i1s
previous moclc wh.·n ii re ach••s the nc~t chapter.
If
ii is desired 10 con tinue ~arching this nc~t chapter. rele a. -.e t h..:
SEARCH t'lun on and pr CM aiai n. ScarchinJ!henconlinuc~ 101t'le nc ~t
chapter.
lfc
hap1 c rn1.1mbc r sareoo thcingdisplaye d. scarchingisunin1e rrup4c<I
thr oughoullhedlSC.
With Cl V
di ~ . 1 he SEARCH buu on o pe rates in the sa me way as for
CA V di5CS. buc 1h c di splayshows tt'le elap sed lime or ehap1er number.
as a
pp ropriate.
PAL:SJ-:
Wh.:n the PAUSE button is pressed, both audio and video are muled
a nd the PAUSE indicat or lights.
To resume 1he previousactio n, press the PAUSE buttononce mo re.
While in t
he pause mode. other functions may also be st ancd by
pres.sing1heappropri
11 e buttons(e.g. PLAY,STILL, SEAR CH etc.)

Sl . 0\\"(('.A\ ' unl~)
Forward ,11 reverse ~h;w motion is obtained hy prcs.'li ng 1he SLOW
huuon. ~ s low mo1ions peed may he altered hy means of the S PEED
+ a m.I SP EED - bunons .
Tht.- sp.:cdcanhl:at.ljustet.l in s tepsw 1 13 . II/0.11 2.'i , ll!\Oor 1/Jlil,,fth e
normal spccll (which is 2.'i fr ame s per second) : 1/J or no,mal ~reed is
lhcdcfaullvaluc.
t" AST(C\\·unlJ)
Each lime 1he., o r~ section of the FAST hulll >n is pr ... -»«!. the optical
rc;M.lout unit moves a1 3(defoull ,· aluc). IO or 201imo il s nor mal speed
in futw<1rd or ,cversc. the effect on the screen hc:ini that of rapid
motion . The spe ed isset using the SPEED+ and - hunons.
- \l"l)IO
lllc: l.aicrVision disc c,1nhins not only piclurc information. hut c an
also xc, ,mm u, fale 1wo so und channels. The,..,: c;m pro vide s1erco
soun d. 01 !><.'pa1a1e so und channels: for cxamr,lc. acomm cn1ary in 1 wu
lan1;u:iic.~. No1c ,hat LV- ROM disci1 ca n cont ain cb l;a in ph1c,' of the
au dio . In 1h isca~ 1hc ~ullio is a utomaticallr muwd
Wflen lhc playc, is ~witchcll on. ii always assume s th e forward play
mo
de. ,.;th ho lh sound cha~ncls enahled. In The ca s.: of se pa rate sound
ch ann ds. you can switch one of them off hy pres'ling the rclc~ant
AUDIO hutton (I nr 2). In this case the cnahlcd a udio channnel
appc al"li al hoth uulputs
To s,.·il ch on again. press the appropriat e huncm : rho: enaokd channels
arc indiu1ctl
hy the AUDIO l anti AUDI O 2 ind ic at uf'i on the front
pa!k:I
/'1/ou : So und is audihlc in the forwart.1 play 1TM>de only
1. If nn pic ture numhe1 isc urrently dhp l a~cd on 11M: moni w,. p,c~s
1h c PNR t>uuon. A pi ct ur.: number uppcars
2. Press 1he digi1 huuon i (max . 5) curresp,.mding 10 the picture
numhcr you w an t to go to (e .g. 2. 2. 1. 3. '.'i . ii you wa nt picture
numhcr 22135). If you make a mistake. prcsslheCORRh utlo n and
sl;a,t again. As soon as you press the firsl diV1 !he player assumes
1hc Mill mode. The number you select is displ aye d hc:kr,,.· 1hc current
pic1urcnumhcr
.l. Pr ~"M the GOTO buuon. The player will quickly l oo k for the
numhcr !;Clcctct.l. During this action sound r.. mu1 ed . and 1he
moni to r J1C reen is hlank. hut the selected number i~ displu) · cd. On
arri val al the ~lcc ted picture numhcr. thet.'tlflCSP,.lfldingpkturc
appc;ar..
,m the m,initorin still mode. Now y ou c- Jn sdcl."t any play
1TM11,k h) ' prc ~~ in i;. 1he cu ,rcspontling t>utton
<
OOTO t 'tl ,\ t'Tt-:K . ,1 ·~11\t:K
I If no chaplcr numhcr i sc u rrc nil }· displ ayed on thc monitor . pre ss
1he
CNR l>uuon. Th e ch aptcr numhcr. ii av ;,ilablc on 1h e di sc.
appear..
2. P,~.,._~ the digit huuom (max . 2) corresponding 1t1 1 1k: chap1 er
numhcr you want to go to (e .g. 2 ii you wa nt chap1er 02). If you
make a mistake. press the CORR hunnn and s1a r1 .ag<1in . Note that
wi1h CAV t.lisci;, the playc, assumes tlk: still m ode as soon as you
prc-.s 1he fin;t digit. The number you ~kcl r.. di splayed hclow the
cunc n1 ehap 1ernumhcr.
3. Pre~ the GOTO bullon. T he player (jUklr.ly loob for the firlil
pi c tur e o f 1hc ch:ipter $ dcc1c~. D urin g th is ac: 1 ion . ~m.1 ~ m1,11et.l
anti1 hc monitor screcni~hla nk. O n re ac hin g t he r eq uired chap1er.
1hc()4ay~r s u,m norma l play forward.
GOTOTJ:i.lt: t'OSll"IO:'\" (( " I.\ unhl
With CL V <lN'S ii i~ po~sihk \tl i;.o to ;1 s elected time po l,j ti on on the
disc.
1
I( no time posi1i1111 is currcntl)' displa yed. pr cs s thc PNR hutlon. ,\
timc po s ition apr,:aN on 1h..: s,;rccn.
Press
th<.- digit hutlnfls corrcspondin~ tn th e mioulcs \lf 1h,: lifflt'
positioo you w;inl lu gu 10 : the numhc:r )'OU selectis displaycdhc:lu,.·
thc time ct..Jc. II y ou make a mistake. press the C ORR hunon ;ind
start again. lncn pres s the ENTER hunon. Some new di sc,; ;also
allow
yuu tu cn 1cr scr,mds 11s well. Tn enter the ~l~nnds, again use
the digit h1 .mo nsfo 1l owed by ENTER
3. Prcs., t he GOTO hullon. The player will quickly look fo r lhC'
numhcr sc lcc h:d. During this action sound is muted , ;md 1hc
selcctctl time posi1ion is displayed. On arrival a1 1hc sclcc tcd time
pu~itiun.
pla y s1a rlll frnm that point.
It is possihlc10 set up a..c4ucn c..: nr pic1urc numtk:n;. chap ter num~rs
or time c ode s hy pr,1gr;1mming "ia th e remoie con1rol hall<Jsc1
I Prcs.~ eit her PNR (for pict ure nu mhcr or time code progr amming)
ur
CNR (for cha pte r numhcr programming). ~o that th e di~plily
appcar.;onthc S<' rc ..:n
2. Pres s Ilk: DJSPLA Y hutton. The current program (if an y) is th en
displa yed,m th csc r ccn . Sec Fig.Ii.
PROGRAM 1 PNR 1642
1000 PU:W FIJD
2000
3200 FAST* 10
4500
2500 PLAY REV
1000
51000 SLOIJ: 50 51500
2569 srn..L 60
2579
PROGRAM CNR 2
1.CNR
5
9.CNR
2.CNR 7 10.CNR
3.CNR 9 11.CNR
4.CNR 16 12.CNR
5.CNR
18 13.CNR
6.CNR 20 14.CNR
7.CNR
15.CNR
8.CNR 16.CNR
PROGRAM 1 TIME 1:23
12:45 PLAY FIJD 17:20
23:00 PLAY FIJD
28:25
45:22 PLAY FIJD 56:55
58:00
PLAY FIJD 59:16
"

The player is now in the programming mode. You att ab,le to modify
1he eristing program or cnte, a new progr a m. A fluhing eur..or
indica1es
1he current entry position on the programfable. The contents
a11hispositionmaybcchanged
f'ktwrtNpttalprosruDH"'
A piclure segment program may be up to two pages long. each page
comtlting of 8 ~gments. A segment is displayed as on e line on the
c.g.15(DJPLAYFWD20500
Pic1urenumbcnmaycitherbeentereddircclly(usingthe0-9digit
butlons) a nd then pre!i5ing ENTER, or by scoring the current picture
number. To correct numbcn entered directly, u se the CORR bullon.
Wh en 1hc cur..or isin an empty picture number posi1ion, the player can
be ronuolled in the usual way with the PLAY. SLOW, FAST and
STILL buttons. If duringplay youpress lhe ENTER bullon, the player
halts andthe current picture number is stored.
The re quired action (PLAY, STILL. etc .) is s.el«tcd by pre ssing 1he
eonesponding button on !he remot e control handset and then pr essing
ENTER. Until ENTER is pmaed, 1h e ac tion may bedu1nged simply
by pressing another bu1ton ins 1u d.
Wi1h some functions ( e.g . SLO W), e,ura info ~1 ion. such as th e
speed. may also be entered (e.g. 10 for 1/10 rKlfll'lal 5P=ed). Note that
for STILL , it is necessary to enter the duration (in scoonds). Pressing
Che ENTER button moves the cur..or to the next entry posilion. If no
Kl ion is e ntered, PLA Vis assumed.
The J)f og ram is displayed on the screen below 1hc pla ying mode. To
move on to the next line of the progn.m, pres.\ lhc NEXT buuon.
Pressing this button on the last line of the program moves lhe eur..or
back101hefintlineagain.
To dur the program displayed. press boda CLEAR buttons al lhe
sa metime.
To move 10 the s tan or paac 2 while par:e I is displaye d. prc.ss 1he
DISPLAY bullon . Pr e.ss in& the DI S PLA V buuon when on page 2e nd s
p
rogra mminga nd returns 10 n orma l pl ay m«k
To pby lhi 1; Kquence KC 'P laying a programmed seq ue nce· below.
The pmgr am is saved by the player until it is ckared (by presi;ing both
CLEAR bun ons when the program isdisplayed)o r un1il i1 is updated.
This is performed in a similarway to 'Pictur e s.cg mcnl program entry'
described
above. Up to 16 ehapten may be st ored in any order;
repc1 i1 ionof a chapter in the proiram isalsoallowed. Chapier numben
must be ent ered directly using the O• 9 digi1 bun ons. To correct an
ent ry,use the CORR buu on.
Tlte ENT E R and NEXT bull ons bo lh mo ve the cu rso r 10 the ne;,;I line.
eiu;ept when al lhe l as t lin e, w hen th ey move !he cunmlo th e firsl line
again.
To clea r an entire seq uence. pre ss botlti CLE AR bu n ons at th e same
time.
To end programming mode, pre ss DI SP LA V. Any empi y positions in
d te chaptersequence will be ignored when the Kqu ence is playedback.
To play this Kquence KC 'Playinga progr a mmed sequence· below.
The prognun is saved by the player until it is cleared (by pressing both
CLEAR buttons when th e program isdisplaye d) or until it is updated.
IS
This is carried oul in a similar way to 'Picture segment program en1ry'
described above . A lime 5egmentsequencc may be up 102 pa &«loo&,
each page consisting of 8segments. The format is:
lime I PLAY FWD lime 2
Whcrc1hetimcisinminutcsandscconds(e.g.23:30).
The time is entered either directly. using the O• 9 digil buuons, Of by
storing the current lime posilion during play. If during play you pt"e.SS
the ENTER b\lUon. lhe current time positionis stored. Whenentering
the time directly, the CORR button may be used for collfflMJn.
Depending on the discused, the seconds ent e red may be ignored.
To move on lo lhe next line of the program, press the NEXT bullOfl.
Pressing this bu11 on on 1he last line of the program moves lhe cur..or
back1othefirstltnCagain .
To clear the complete program. press boU1 CLEAR button s al lhe
sameiime
To m ov e 10 the s1 an of page 2 while pa ge I is displayed, press !he
DISPLAY bu11 on . Pr essing th e DISPLAY b un on when Ofl pag e 2ends
p rog ramming and tt lu m~ to n orma l play mode .
To pl ay thissequence: s,ee 'Playing a programmed sequence' Mlow.
The program i's saved by the pla yer until ii is cleared (by prcssingbolh
CLEAR button s when th e p1ogram is di5played) Of until ii is upda ted .
To playa sequ c noc which has been stored in the memory as described
above, press the START!REPEAT button, while the picture number
etc. is displayed on the 5Creen. The playerquicklysearchesfor 1he fint
picture of the sequen ce stored and then stam the required action . Th e
actions stor ed are carried out succes.5ively in th e order in which 1hey
a res 1ore d. Al lheeNloflhe lut iremthe playerhalts( CA V) otgoes to
pause (CLV). D11rin 1 s,e1rch ae1ions becw een irems. sound is muled
andthescreenisbl ank.
A se
quence c an be stopped by pre ssi ng any action button (e.g. Play.
Fas1 .S 1i1l) .
Pressing
the START/REPEAT button either sta ns playing a
programmed sequence (if one has been set up) while the piaure
number etc. is displayed on the screen. or starts playing the en1irc disc
from the start. U1he buttonis pressedagain, play returns once more to
thest art ofchediscorprogrammedsequence.
Kt:PI.AY
Th e REPLAY switch is situated a1 the rear of the pl aye r.
If Che pl ay er is switchedo n when the REPLAY swilch is on, the ptayn
a ut oma cically starts up in lhe re pl ay mod e. If th e pl ayer is alr eady on
a nd th e R EPL AY s Wllch is sw itched on, pl ay imm ed iately s1a ru al the
beginning of a programmed seq u ence .or return s to 1 he s tanof1hedisc.
In the replay mode, !he player is in a co ntinuo us pl ay l oop . If 11
pro g rammed sequence is in me mory. th at se quence will be pla y ed over
and over ag.iin. (A ptcture number or time code se quen ce ha s priority
over a cha pier num be r sequence .) If there is no sequence in nicmory,
the who le d& will be played over and ov er again. TIie REPLAY
indicator on 1he fron1 o ft he player lights.
Nal1t: In lhe re play mod e, all controls except the followi•ga rc
disabled·

START/REPEAT, which moves play back 101hestart of the
scquence(ordisc).
NEXT, which movesplay IO the nexl uiment (or chapter) in
ai;equence
PNRandCNR
AUDIO I &2
TXT
To exif the Replay mode, press the REPLAY switch al 1he rear of the
playe r.
111'.TBUlTON
This buuon is onlyeffective if the playerisconnected to a TV setwith
Tek1e11t
and Euroconnectorremote control facificies.
PttssinJ
the TXT bu11on switch es the monitor display be1ween: TV
mode, TXT mode and mixed mode.
16

17

SECTION4
INTERACTIVE PLAY OPERATION
Introduction
F-rode operationvia RS232-C.
Mode selection
SCSI operalion
Mode selection
Page
19
19
19
19
19
19
18

INTERACTIVE PLAY OPERATION
ll'lrrfROOU(,TION
ln1eractive operation requires the use of a compu ter J)fogram,
Vir1...any any compu1er with an RS232·C or SCSI incerface can con1rol
the VP41S usin& a high-level laniuage such as BASIC or PASCAL.
11.e relevant connection al the rear of lhe VP4U slloald be used lo
tQl!ned the ~I computer. The required program ff loaded into the
rotnpulerr;y51emintheusualway
It is 001 possil>le to simullaneously control lhe player via both the
RS232-C and the SCSI bus. Mode selection
mu51 be made by the
maste r (host c~puter) to determine the mode of communica1ion; the
playtritselfc11nnotmakethisselection. lnitiallychcptaycrisinthc
F-code oommunication mode (~ia RS232-C) and the SCS I bus is
switchedofr.
1-'-(0t>I-: OPERATION VIA RSZJ2·C
This mode is au1omatieally selec1ed by che pl ayt r unless you is.sue a
Stan-unitcommand, H described in Section 7 • 'SCSI oper11ion".
The
player is in the slave mode. whereby ii e11.ec 111 u l he~11nm.mhreceived
from lhe «>mputer . and sends back confinna lory responsn.
An F-code con:.im of one or mor e 8-bh bytes. ooded in ASCII,
tennin.1 ned by a carriage re1u111. These codes provide interactive
conuolol1hcplayerfortheuser.
"Ill ~ it only necessary if you have selected SCSI operalion and then
wanI lo swi tch to RS232-C operation.
Thc tr ans,nis.sion protocol for RS232-C mod e sckdion is described
below. Note 1ha1 carriage returns should no1 be se n1. ACK ref en 10 a
Positive acknowledgement ·A' and NA CK lo a Ne111tive
acknowled&emc:nt'N'.
I. The muter sends two spaces.
2. The master awaits ACK f ro m lh e pl ayer . If 1h.S tS /lOl receiv ed
wlthin200ms,,etry .
3.
Thc fflllS ter sends the mod e se l ec t byte for F -code communic-ation,
whtehi sF .
4. Thc master awaits ACK from the player. If !his ti not received
wilh in 200ms, retry mode selection.
See Section S- "F<ode programming'.
SCSI OPERATION
SCSI operation provides communication bc1w«n the pJayer and the
hOil
oompute r, allowing the VP415 to be used as an LY-ROMmemory
device. Bo th data mrieva\ from the di sc, a nd conu ol of the player ar e
possibte.
(h is also possible 10 u.se F<Ode s 10 conuol the player via
SCSI.)
.............
The SCS I mode is se l ec ted by issuing a Sta n , unil command to the
player. Sec Section 7 • 'SCS I operation '.
19